D.C. Mun. Regs. tit. 18, r. 18-3012
The burden of proof shall be on the District.
The standards of proof established by the D.C. Traffic Adjudication Act are the following:
All testimony shall be given under oath or affirmation administered by the hearing examiner.
The respondent shall have the right to present witnesses, to conduct examination and cross examination, and to introduce documentary evidence.
The hearing examiner may require production of evidence.
The Notice of Infraction shall constitute prima facie evidence of the statements contained in the notice and shall be a record in the ordinary course of business.
The original of the ticket or any reasonable facsimile, including the copy issued to the respondent, may be used at the hearing.
Irrelevant, immaterial, unduly repetitious, or unduly lengthy evidence may be excluded at the discretion of the hearing examiner.
D.C. Mun. Regs. tit. 18, r. 18-3012